Specifications

Industrial Grade

Food Grade

FCC IV

 Main Contents             % ≥

98

98

98.0-103.0

  Phosphorus pentoxide % ≥

58.0

58.0

57.0-59.0

Sodium Oxide (Na2O)

25.5-26.5

25.5-26.5

25.5-26.5

  PH value of 1% solution

4.2-4.8

4.2-4.8

4.2-4.9

 Heavy metals, as Pb    

10ppm

10ppm

10ppm

  Arsenic, as As            

3ppm

3ppm

3ppm

  Fluoride as F              

50ppm

50ppm

50ppm

  Water insoluble            % ≤

0.10

0.10

0.2